/*
 *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
 * 
 *  Redistribution and use in source and binary forms, with or without modification, are
 *  permitted provided that the following conditions are met:
 * 
 *     1. Redistributions of source code must retain the above copyright notice, this list of
 *        conditions and the following disclaimer.
 * 
 *     2. Redistributions in binary form must reproduce the above copyright notice, this list
 *        of conditions and the following disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 * 
 *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 *  The views and conclusions contained in the software and documentation are those of the
 *  authors and should not be interpreted as representing official policies, either expressed
 *  or implied, of BetaSteward_at_googlemail.com.
 */

package mage.ai.simulators;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.UUID;
import mage.game.Game;
import mage.game.combat.CombatGroup;
import mage.game.permanent.Permanent;
import mage.players.Player;

/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class CombatSimulator implements Serializable {

	public List<CombatGroupSimulator> groups = new ArrayList<CombatGroupSimulator>();
	public List<UUID> defenders = new ArrayList<UUID>();
	public Map<UUID, Integer> playersLife = new HashMap<UUID, Integer>();
	public Map<UUID, Integer> planeswalkerLoyalty = new HashMap<UUID, Integer>();
	public UUID attackerId;
	public int rating = 0;

	public static CombatSimulator load(Game game) {
		CombatSimulator simCombat = new CombatSimulator();
		for (CombatGroup group: game.getCombat().getGroups()) {
			simCombat.groups.add(new CombatGroupSimulator(group.getDefenderId(), group.getAttackers(), group.getBlockers(), game));
		}
		for (UUID defenderId: game.getCombat().getDefenders()) {
			simCombat.defenders.add(defenderId);
			Player player = game.getPlayer(defenderId);
			if (player != null) {
				simCombat.playersLife.put(defenderId, player.getLife());
			}
			else {
				Permanent permanent = game.getPermanent(defenderId);
				simCombat.planeswalkerLoyalty.put(defenderId, permanent.getLoyalty().getValue());
			}
		}
		return simCombat;
	}

	public CombatSimulator() {}

	public void clear() {
		groups.clear();
		defenders.clear();
		attackerId = null;
	}

	public void simulate() {
		for (CombatGroupSimulator group: groups) {
			group.simulateCombat();
		}
	}

	public int evaluate() {
		Map<UUID, Integer> damage = new HashMap<UUID, Integer>();
		int result = 0;
		for (CombatGroupSimulator group: groups) {
			if (!damage.containsKey(group.defenderId)) {
				damage.put(group.defenderId, group.unblockedDamage);
			}
			else {
				damage.put(group.defenderId, damage.get(group.defenderId) + group.unblockedDamage);
			}
		}
		for (Entry<UUID, Integer> entry: playersLife.entrySet()) {
			if (entry.getValue() <= damage.get(entry.getKey())) {
				//TODO:  check for protection
				//NOTE:  not applicable for mulitplayer games
				return Integer.MAX_VALUE;
			}
		}

		for (CombatGroupSimulator group: groups) {
			result += group.evaluateCombat();
		}

		rating = result;
		return result;
	}
}
